William lang



(No Model.)

W. LANG.

` PNEUMATIC WALL BBAGKBT. No. 355,021. Patented Dec. 28, 1886.

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and #(55 l I m' r M UNITED STATES PATENT OFFICE;

WILLIAM LANG, OF BROOKLYN, NEW YORK.

PNEUMATIC WALL-BRACKET.

SPECIFICATION forming part ofY Letters Patent No. 355,021, dated December 28, 1886.

Application filed J anuary 20, 1886. Serial No. 189,222. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM LANG, of Brooklyn, in the county of Kings and State of NewYork, have invented certain new and useful Improvements in Pneumatic Wall-Brackets, of which the following is a specification.

This invention relates towall-brackets of that class which are attached to the wall'without screws or other fastening devices' by atmospheric pressure; and thein vention consists of a shell or bracket, an elastic diaphragm at therear end of the bracket, avspindle applied to the diaphragm, and a hook pivoted to the frontend ofthe spindle and provided with cani` shaped lugs back vof the pivot, which lugs lock in position when placed in line with the spindle against the front part of the shell, so that the elastic diaphragm isA held by atmospheric pressure on the wall.

)In the accompanying drawings, Figure lrepresents a side elevation of my improved pneumatic wall-bracket. Fig. 2 is an end elevation of the same with the hook folded up. Figs. 3 and 4 are respectively vertical longitudinal sections showing the hook in horizontal position and folded up.

Similar letters of reference, indicate corresponding parts.

In the drawings, A represents a hollow bracket vor shell of annular shape, which is wider at the base, contracted at the front or apex, and provided with a guide-collar, a, at that point. A diaphragm, B, of rubber or other suitable elastic material, abuts against a shoulder, d, at the base of the bracket A, said diaphragm being applied,by a center hub, b, and wire b', or other suitable fastening device, to a spindle, O, that extends through the guide-collar a to the front of the bracket A. The rear end of the spindle G is riveted to a sheet-metal disk, G, that is of a smaller diameterthan the elastic diaphragm B and bears on the reargsideof the same. To the front end of the spindle Gis pivoted the forked rear end of a suspension-hook, D, which rear end is made in theshape of two cam-shaped lugs, e e, that are rounded off at the corners. The camshaped lugs c e are moved along the face of the guide-collar c, and are set into line with the spindle O, when the hook D is taken hold of and` pulled in downward direction. The

straight rear edges of the lugs e e ahut'against the collar c, as shown in Figsl and 3. In this position of the hook D the central part of the elastic diaphragm B is pulled forward by the spindle C and disk- O', while the circum ference of the diaphragm is pressed against the wall and retained thereon by atmospheric pressure. D is lifted again to a'positicn at l right angles to the spindle. The spring action ofthe elastic diaphragm B moves the spindle C inwardly, so that the lugs c e of the hook D are pressed tightly by their sides against the collar a, as shown in Fig, 4.

When' the pneumatic wall-bracket is applied for use, the bracket A is held by one hand and pressed firmly against the wall, so that the elastic diaphragm B hugs the same. The hook D is taken hold of by the'other hand and pulled down, whereby the spindle O and elastic diaphragm B arel moved in forward direction until the lugs e e'of` the hook are in line with the spindle and locked 'against the collar c.V As the circumference of the elastic diaphragm B is tightly pressed against 'the wall, a vacuum is formed in the cavity formed between the elastic diaphragm and the wall, so that the bracket is securely held on. the wall by the pressure of the atmosphere, and can `be used for hanging up articles of all kinds. To detach the bracket, the hook is moved up again into a position at righ't'angles to the spindle, inwhich position the bracket is carried in the pocket. The pneumatic bracket forms a convenient device for r'or, furniture, orother point of support, which can be readily detached after use and carried in the pocket.

I am aware' that pneumatic brackets which are supported on a Wall or other smooth support by atmospheric pressure, and in which a bracket, an elastic diaphragm, and means for pulling the latter away from the wall or other v point o'f support, have been known heretofore, and I/do not claim this feature, broadly.

Having thus described my invention, l claim as new and desi re to secure by Letters Patent- The combination of a shell or bracket having a guide-collar at the fron-t end, an elastic l diaphragm at the base of the bracket, a spindle attached to the center of the diaphragm IOO extending forward through said collar, and a suspension-hook pivoted to the front end of the spindle and provided with cam-shaped lugs back of the pivot, said lugs bearing on the co1- ]ar of the bracket and looking the hook to the collar in line with the spindle or at right angles to thesarne, substantially as set forth.

In testimony that I claim the foregoing as lny invention I'have signed my name in presence of two subscribing witnesses.

WILLIAM- LANG. Witnesses:

CARL KARP, MARTIN PETRY. 

